HP Pavilion a1010n Desktop PC (Intel Celeron D Processor 340, 512 MB RAM, 160 GB Hard Drive, DVD/CD-RW Drive) (Discontinued by Manufacturer) 2.93 GHz Intel Celeron D processor with 533 MHz front-side bus, 256 KB L2 cache 160 GB hard drive, 512 MB RAM (2 GB maximum), DVD-/+RW, CD-ROM drives 5 USB 2.0, 2 Firewire (IEEE1394), 1 serial, 1 parallel, 1 VGA, headphone, microphone, multiformat memory card reader Built-in 10/100 Ethernet and 56K modem Windows XP Home Edition